Slope
If the equation is y=4/5x-20, is the slope positive, negative, or undefined?
Positive (4/5)
The x values are the input, what is a fancy math name for input/x values?
Domain
If a is 3, and b is 4, what is C?
C=5
YOU MUST SIMPLIFY
4(3y−1)+2y
14y-4
What is the signs of x,y in Quadrant 2?
Negative x, negative y
What is the y intercept for this equation? y=-2x
0 (origin)
The y values are also called the output, what is a fancy name for Output/Y Values?
Range
b=6 and c=12, find a
a=8
YOU MUST SIMPLIFY
2(5x-3)-4x
6x-6
-1/2 (30)
-15
What is y when y=5x+1 and x=2?
y=11
At the grocery store, for every input, you should have a corresponding output. What is it called when the input gives 2 outputs?
NOT A FUNCTION
If a=5 and b=8, what is the hypotenuse?
The hypotenuse c would be RADICAL 89
5(3y-2)+4y
19y-10
If the diameter of the circle is 12 inches, what is the radius?
6 inches
Look at these points and tell me what is the y intercept?
(2,3) (4,6) (8,12) (0,-2) (-2,-4) (-4,0)
(0,-2) y intercept is when X=0
At the dollar store, different inputs give the same output of 1 dollar. Is this a function?
Yes, different inputs can give the same output. But one input CANNOT give different outputs.
Pretend Natchitoches is 50 miles south of Shreveport, and Natchitoches is also 120 miles east of Nacogdoches TX. What is the distance from Nacogdoches TX to Shreveport LA? (find the hypotenuse)
130 miles
1/2(12x−18)−2x
4x-9
$80
Find the slope using (y2-y1)/(x2-x1)
y2=3 y1=1
x2=3 x1=0
rise over run= 2/3
License plates in America, is it a function Yes or No and why?
Yes because for each license plate (input) you have a different (output)
SAILBOAT
x=3
1.5(2x-y+10)-1x
2x-1.5y+15
You got your first job with DoorDash! But you need a car, so you are in debt to the car dealership for $6000. You are making $12 for each delivery. How many deliveries until you pay off your car?
500 deliveries